The ESM5 is a solar module with an integrated charge controller for maintaining 12VDC rechargeable batteries.
Long lifetimes after production and transport as well as increasing standby-power consumption of new cars often lead to a discharge of the vehicle battery.
The ESM5 Solar-Battery-Maintainer-System prevents a deep discharge of the battery causing a massive increase of the battery lifetime. The current state of charge of the battery is indicated on the front side of the ESM5 at any time via LEDs.
Processor controlled charging
Aluminium / plastic sandwich carrier plate
Only 5 mm thick (without charge controller)